Horsetooth Half Marathon - Presented by Fort Collins Connexion
Typically 33–59°F · low rain risk
See last 10 years
On this date: rain 1 of the last 10 years
2026
28–56°F
dry
2025
30–34°F
rain
2024
32–39°F
dry
2023
37–70°F
dry
2022
28–56°F
dry
2021
26–56°F
dry
2020
17–44°F
dry
2019
34–62°F
dry
2018
32–55°F
dry
2017
45–73°F
dry
Best months to race in Colorado →
Countdown and forecast for this race in the appGet app ›
About this race
Welcome to the 54th running of the Horsetooth Half Marathon, Presented by Fort Collins Connexion. It all starts on Sunday, April 18th at 8:00am. Your race will take you on a scenic point-to-point journey from the location of Hughes Stadium, the former home of the CSU Rams, to the finish line party at New Belgium Brewery. On the way you'll tackle the challenging hills of Centennial Drive along the shorelines of the shimmering Horsetooth Reservoir, before you head for the famed New Belgium Finish Line Party on the downhill Poudre River recreation trail. Whether an elite runner or a first time half marathoner, the Horsetooth Half Marathon offers a challenging yet surprisingly fast course, with a net loss in elevation.
Course map
Train with a club
Run clubs near Fort Collins to train with before race day.
Suggested Races
Organize this race?
Claim it free to manage your listing. Want it first in every search? Boost it for $1 a day.